Ahead of the meeting, Mr Johnson said: "We are going to have a conversation about what we can do to help United Kingdom firms and help European firms have confidence that they can still do business".
Merkel is to make a trip to Russian Federation next Friday, and Macron is set to meet Putin during a business forum in St. Petersburg the next week. Siemens CEO Joe Kaeser announced on Sunday that his company will not reach any new business deals with Iran. "Do they want to do business with a threat?" he asked. However, it never went into effect: Shortly after taking office, Trump signed an executive order that took the USA out of the deal, thus keeping it from entering into force.
The Western trade diplomat gave the example of Iran's recent restrictions on transferring funds to the European Union - an effort to control the rapid slide of the rial - that caused huge problems for importers.
He said he told U.S. Treasury Secretary Steven Mnuchin that if he doesn't exempt the French companies, he should consider a so-called grandfather clause for deals struck in Iran since 2015 or an extension of the 90-day period the Treasury Department has set to wind down operations in Iran. "That is what we have done and that is what we will continue doing", Netanyahu said.
"They are used to working within legal and economic constraints".
Mr Johnson added: "We will be looking at all the ways we can come up with to protect legitimate United Kingdom and European businesses who may want to trade with Iran, who do want to trade and have great plans to do that".
"As you know very well, we have many other disagreements", she said. The EU has said it will work with Russian Federation and China, who also signed the accord, to keep it alive.
It is unclear how well the measure could be enforced, given that big multinationals are likely to be doing more business in the US than they are in Iran and may be unwilling to compromise that market access. According to the analyst, European countries may draw Washington's attention to the fact that regardless of United States sanctions China is not going to halt its cooperation with Tehran.
European Union and Iran agree to strengthen dialogue aimed at preserving the Joint Comprehensive Plan of Action, EU foreign policy chief Federica Mogherini said, APA reports quoting Sputnik.
He also played down concerns about Washington's penalties, saying, "I don't see anything big to worry about at this stage".
The two sides also discussed the development of economic relations, a Turkish presidential source said.
Trump said Iran was not living up to the deal, citing Iranian documents that Israel said it stole from Iran earlier this year.
"We are a global company".
Before the tour Zarif reiterated that Iran was preparing to resume "industrial scale" uranium enrichment "without any restrictions" unless Europe provided solid guarantees it could maintain trade ties despite renewed USA sanctions.
Europe should not accept that the USA is the "world's economic policeman", he said on Europe-1 radio.